Earnings Per Common Share (Schedule Of Basic And Diluted Earnings Per Common Share) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Earnings Per Share [Abstract]
Net income (loss) from continuing operations	$ 390		$ (199)		$ (172)		$ 78
Preferred stock dividends - U.S. Department of Treasury	(134)		(133)		(401)		(400)
Preferred stock dividends	(67)		(66)		(200)		(194)
Impact of preferred stock amendment	0	[1]	0	[1]	0	[1]	32	[1]
Net income (loss) from continuing operations attributable to common shareholders	189		(398)		(773)		(484)
Income (loss) from discontinued operations, net of tax	(6)		(11)		(32)		(29)
Net income (loss) attributable to common shareholders	$ 183		$ (409)		$ (805)		$ (513)
Basic weighted-average common shares outstanding	1,330,970		1,330,970		1,330,970		1,330,970
Diluted weighted-average common shares outstanding	1,330,970	[2]	1,330,970	[2]	1,330,970	[2]	1,330,970	[2]
Basic earnings per common share
Net (loss) income from continuing operations, Basic	$ 142		$ (299)		$ (581)		$ (364)
Income (loss) from discontinued operations, net of tax, Basic	$ (5)		$ (8)		$ (24)		$ (22)
Net (loss) income, Basic	$ 137		$ (307)		$ (605)		$ (386)
Diluted earnings per common share
Net (loss) income from continuing operations, Diluted	$ 142	[2]	$ (299)	[2]	$ (581)	[2]	$ (364)	[2]
Income (loss) from discontinued operations, net of tax, Diluted	$ (5)	[2]	$ (8)	[2]	$ (24)	[2]	$ (22)	[2]
Net (loss) income, Diluted	$ 137	[2]	$ (307)	[2]	$ (605)	[2]	$ (386)	[2]
Potential common shares excluded from diluted earnings per share calculation	574,000		574,000		574,000		574,000

[1] Refer to Note 20 to the Consolidated Financial Statements in our 2011 Annual Report on Form 10-K for further detail.

[2] Due to the antidilutive effect of converting the Fixed Rate Cumulative Mandatorily Convertible Preferred Stock into common shares and the net loss attributable to common shareholders for the nine months ended September 30, 2012, and the three months and nine months ended September 30, 2011, respectively, income (loss) attributable to common shareholders and basic weighted-average common shares outstanding were used to calculate basic and diluted earnings per share.